Tokyo Keiki Microwave level gauge MRG-10

Microwave level gauge MRG-10

Tokyo Keiki Microwave level gauge MRG-10

The radar pulse is virtually unaffected by the contents and atmosphere of the tank, temperature or pressure. Thus radar measurement is proven to be the most reliable gauging method in most applications. Furthermore, maintenance requirements are practically zero because no part of the gauge is in physical contact with the liquid.
These features make the MRG-10 very well suited for storage and buffer tanks in the chemical and water industry.

The MRG-10 is most appropriate for calm liquid surfaces. If you intend to use the MRG-10 to measure turbulent surface liquids, it may be recommended to employ a still pipe used in order to achieve a calm surface.

The MRG-10 is appropriate for storage tanks or buffer tanks that have relatively calm surfaces.

  • Chemical and petroleum
  • Pharmaceuticals
  • Food and beverage

Other applications include:

  • Industrial water such as river intake gates
  • Water supply
  • Sewage water treatment plant
  • Hydraulic power station


1. General
Measuring principleTime Flight impulse Radar technology
Operating frequency6 GHz
Half power beam angleRod antenna: 30deg.,   Cone antenna 4": 34deg., 6": 22deg.,  8": 17deg.
Microwave output powerMax 1 μ W
Reference conditionsFree space reflection from metal surface, ambient temperature 25℃, atmospheric pressure
2.Display / Configuration
Local display5 digit LCD display with 4 configuration buttons. Level, Ullage, Volume, Current or Amplitude output
HART hand held communicatorRosemount communicator RS275, just display not for configuration
PC Remote configurationWindows base setup and configuration software
3 Electrical
Power supplyLoop powered 16-36 VDC (16-30VDC in Ex applications)
OutputAnalog DC4-20mA +HART
Output variableLevel, Ullage in m or ft. Volume in %, Amplitude in dB.
Signal on alarmHold, Low (3.9mA), High (22mA)
Cable entry2-M20x1.5(Applicable Cable diameter : 6.5-9.0mm)
4. Mechanical
AntennaRod antenna, Cone antenna 4", 6", 8"
Antenna material exposed to tankRod antenna: PFA and SUS(316L,ext.version)
Cone antenna: 4", 6", 8" SUS(316L), PTFE, Viton
Antenna dimensionSee page 5 and 6
Housing / EnclosureCasting Aluminum
FlangeOn request or customer supply
Mass3.3--4.3Kg, depend on antenna size
Height above flange230 mm
5. Environment Condition
Max. pressure10 bar. (145 psi)
Ambient temperature -20 ℃ to 70 ℃ (-4°F to 158°F), LCD Display -20 ℃ to 70 ℃
Storage temperature -40 ℃ to 80 ℃ (-40°F to 176°F)
Tank inside temperature -20 ℃ to 150 ℃ (-4°F to 302°F)
Ingress protectionIP65
Vibration resistanceIEC 68-2-6/1G
Ex. ApprovalTIIS Ex ia IIC T4
6 Measuring Performance
Instrument accuracy +/- 10mm
Repeatability +/- 1mm
Update interval1 Second
Measuring rangeDepend on Antenna type and products nature, see diagram at page 4